2 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "xfs_trans.h"
27 #include "xfs_alloc.h"
28 #include "xfs_dmapi.h"
29 #include "xfs_quota.h"
30 #include "xfs_mount.h"
31 #include "xfs_bmap_btree.h"
32 #include "xfs_alloc_btree.h"
33 #include "xfs_ialloc_btree.h"
34 #include "xfs_dir2_sf.h"
35 #include "xfs_attr_sf.h"
36 #include "xfs_dinode.h"
37 #include "xfs_inode.h"
38 #include "xfs_btree.h"
39 #include "xfs_ialloc.h"
41 #include "xfs_rtalloc.h"
42 #include "xfs_error.h"
43 #include "xfs_itable.h"
49 #include "xfs_buf_item.h"
50 #include "xfs_utils.h"
51 #include "xfs_version.h"
53 #include <linux/namei.h>
54 #include <linux/init.h>
55 #include <linux/mount.h>
56 #include <linux/mempool.h>
57 #include <linux/writeback.h>
58 #include <linux/kthread.h>
60 STATIC struct quotactl_ops xfs_quotactl_operations;
61 STATIC struct super_operations xfs_super_operations;
62 STATIC kmem_zone_t *xfs_vnode_zone;
63 STATIC kmem_zone_t *xfs_ioend_zone;
64 mempool_t *xfs_ioend_pool;
66 STATIC struct xfs_mount_args *
68 struct super_block *sb,
71 struct xfs_mount_args *args;
73 args = kmem_zalloc(sizeof(struct xfs_mount_args), KM_SLEEP);
74 args->logbufs = args->logbufsize = -1;
75 strncpy(args->fsname, sb->s_id, MAXNAMELEN);
77 /* Copy the already-parsed mount(2) flags we're interested in */
78 if (sb->s_flags & MS_DIRSYNC)
79 args->flags |= XFSMNT_DIRSYNC;
80 if (sb->s_flags & MS_SYNCHRONOUS)
81 args->flags |= XFSMNT_WSYNC;
83 args->flags |= XFSMNT_QUIET;
84 args->flags |= XFSMNT_32BITINODES;
91 unsigned int blockshift)
93 unsigned int pagefactor = 1;
94 unsigned int bitshift = BITS_PER_LONG - 1;
96 /* Figure out maximum filesize, on Linux this can depend on
97 * the filesystem blocksize (on 32 bit platforms).
98 * __block_prepare_write does this in an [unsigned] long...
99 * page->index << (PAGE_CACHE_SHIFT - bbits)
100 * So, for page sized blocks (4K on 32 bit platforms),
101 * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
102 * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
103 * but for smaller blocksizes it is less (bbits = log2 bsize).
104 * Note1: get_block_t takes a long (implicit cast from above)
105 * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
106 * can optionally convert the [unsigned] long from above into
107 * an [unsigned] long long.
110 #if BITS_PER_LONG == 32
111 # if defined(CONFIG_LBD)
112 ASSERT(sizeof(sector_t) == 8);
113 pagefactor = PAGE_CACHE_SIZE;
114 bitshift = BITS_PER_LONG;
116 pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift);
120 return (((__uint64_t)pagefactor) << bitshift) - 1;
123 STATIC __inline__ void
127 switch (inode->i_mode & S_IFMT) {
129 inode->i_op = &xfs_inode_operations;
130 inode->i_fop = &xfs_file_operations;
131 inode->i_mapping->a_ops = &xfs_address_space_operations;
134 inode->i_op = &xfs_dir_inode_operations;
135 inode->i_fop = &xfs_dir_file_operations;
138 inode->i_op = &xfs_symlink_inode_operations;
140 inode->i_mapping->a_ops = &xfs_address_space_operations;
143 inode->i_op = &xfs_inode_operations;
144 init_special_inode(inode, inode->i_mode, inode->i_rdev);
149 STATIC __inline__ void
150 xfs_revalidate_inode(
155 struct inode *inode = vn_to_inode(vp);
157 inode->i_mode = ip->i_d.di_mode;
158 inode->i_nlink = ip->i_d.di_nlink;
159 inode->i_uid = ip->i_d.di_uid;
160 inode->i_gid = ip->i_d.di_gid;
161 inode->i_xid = ip->i_d.di_xid;
163 switch (inode->i_mode & S_IFMT) {
167 MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
168 sysv_minor(ip->i_df.if_u2.if_rdev));
175 inode->i_generation = ip->i_d.di_gen;
176 i_size_write(inode, ip->i_d.di_size);
178 XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
179 inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec;
180 inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec;
181 inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec;
182 inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec;
183 inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec;
184 inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec;
185 if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
186 inode->i_flags |= S_IMMUTABLE;
188 inode->i_flags &= ~S_IMMUTABLE;
189 if (ip->i_d.di_flags & XFS_DIFLAG_IUNLINK)
190 inode->i_flags |= S_IUNLINK;
192 inode->i_flags &= ~S_IUNLINK;
193 if (ip->i_d.di_flags & XFS_DIFLAG_BARRIER)
194 inode->i_flags |= S_BARRIER;
196 inode->i_flags &= ~S_BARRIER;
197 if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
198 inode->i_flags |= S_APPEND;
200 inode->i_flags &= ~S_APPEND;
201 if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
202 inode->i_flags |= S_SYNC;
204 inode->i_flags &= ~S_SYNC;
205 if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
206 inode->i_flags |= S_NOATIME;
208 inode->i_flags &= ~S_NOATIME;
209 vp->v_flag &= ~VMODIFIED;
213 xfs_initialize_vnode(
216 bhv_desc_t *inode_bhv,
219 xfs_inode_t *ip = XFS_BHVTOI(inode_bhv);
220 struct inode *inode = vn_to_inode(vp);
222 if (!inode_bhv->bd_vobj) {
223 vp->v_vfsp = bhvtovfs(bdp);
224 bhv_desc_init(inode_bhv, ip, vp, &xfs_vnodeops);
225 bhv_insert(VN_BHV_HEAD(vp), inode_bhv);
229 * We need to set the ops vectors, and unlock the inode, but if
230 * we have been called during the new inode create process, it is
231 * too early to fill in the Linux inode. We will get called a
232 * second time once the inode is properly set up, and then we can
235 if (ip->i_d.di_mode != 0 && unlock && (inode->i_state & I_NEW)) {
236 xfs_revalidate_inode(XFS_BHVTOM(bdp), vp, ip);
237 xfs_set_inodeops(inode);
239 ip->i_flags &= ~XFS_INEW;
242 unlock_new_inode(inode);
250 struct block_device **bdevp)
254 *bdevp = open_bdev_excl(name, 0, mp);
255 if (IS_ERR(*bdevp)) {
256 error = PTR_ERR(*bdevp);
257 printk("XFS: Invalid device [%s], error=%d\n", name, error);
265 struct block_device *bdev)
268 close_bdev_excl(bdev);
272 * Try to write out the superblock using barriers.
278 xfs_buf_t *sbp = xfs_getsb(mp, 0);
283 XFS_BUF_UNDELAYWRITE(sbp);
285 XFS_BUF_UNASYNC(sbp);
286 XFS_BUF_ORDERED(sbp);
289 error = xfs_iowait(sbp);
292 * Clear all the flags we set and possible error state in the
293 * buffer. We only did the write to try out whether barriers
294 * worked and shouldn't leave any traces in the superblock
298 XFS_BUF_ERROR(sbp, 0);
299 XFS_BUF_UNORDERED(sbp);
306 xfs_mountfs_check_barriers(xfs_mount_t *mp)
310 if (mp->m_logdev_targp != mp->m_ddev_targp) {
311 xfs_fs_cmn_err(CE_NOTE, mp,
312 "Disabling barriers, not supported with external log device");
313 mp->m_flags &= ~XFS_MOUNT_BARRIER;
317 if (mp->m_ddev_targp->bt_bdev->bd_disk->queue->ordered ==
318 QUEUE_ORDERED_NONE) {
319 xfs_fs_cmn_err(CE_NOTE, mp,
320 "Disabling barriers, not supported by the underlying device");
321 mp->m_flags &= ~XFS_MOUNT_BARRIER;
325 if (xfs_readonly_buftarg(mp->m_ddev_targp)) {
326 xfs_fs_cmn_err(CE_NOTE, mp,
327 "Disabling barriers, underlying device is readonly");
328 mp->m_flags &= ~XFS_MOUNT_BARRIER;
332 error = xfs_barrier_test(mp);
334 xfs_fs_cmn_err(CE_NOTE, mp,
335 "Disabling barriers, trial barrier write failed");
336 mp->m_flags &= ~XFS_MOUNT_BARRIER;
342 xfs_blkdev_issue_flush(
343 xfs_buftarg_t *buftarg)
345 blkdev_issue_flush(buftarg->bt_bdev, NULL);
348 STATIC struct inode *
350 struct super_block *sb)
354 vp = kmem_zone_alloc(xfs_vnode_zone, KM_SLEEP);
357 return vn_to_inode(vp);
361 xfs_fs_destroy_inode(
364 kmem_zone_free(xfs_vnode_zone, vn_from_inode(inode));
368 xfs_fs_inode_init_once(
373 if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
374 SLAB_CTOR_CONSTRUCTOR)
375 inode_init_once(vn_to_inode((bhv_vnode_t *)vnode));
381 xfs_vnode_zone = kmem_zone_init_flags(sizeof(bhv_vnode_t), "xfs_vnode",
382 KM_ZONE_HWALIGN | KM_ZONE_RECLAIM |
384 xfs_fs_inode_init_once);
388 xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend");
390 goto out_destroy_vnode_zone;
392 xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE,
395 goto out_free_ioend_zone;
399 kmem_zone_destroy(xfs_ioend_zone);
400 out_destroy_vnode_zone:
401 kmem_zone_destroy(xfs_vnode_zone);
407 xfs_destroy_zones(void)
409 mempool_destroy(xfs_ioend_pool);
410 kmem_zone_destroy(xfs_vnode_zone);
411 kmem_zone_destroy(xfs_ioend_zone);
415 * Attempt to flush the inode, this will actually fail
416 * if the inode is pinned, but we dirty the inode again
417 * at the point when it is unpinned after a log write,
418 * since this is when the inode itself becomes flushable.
425 bhv_vnode_t *vp = vn_from_inode(inode);
426 int error = 0, flags = FLUSH_INODE;
429 vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
432 error = bhv_vop_iflush(vp, flags);
434 error = sync? bhv_vop_iflush(vp, flags | FLUSH_LOG) : 0;
443 bhv_vnode_t *vp = vn_from_inode(inode);
445 vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
447 XFS_STATS_INC(vn_rele);
448 XFS_STATS_INC(vn_remove);
449 XFS_STATS_INC(vn_reclaim);
450 XFS_STATS_DEC(vn_active);
453 * This can happen because xfs_iget_core calls xfs_idestroy if we
454 * find an inode with di_mode == 0 but without IGET_CREATE set.
457 bhv_vop_inactive(vp, NULL);
460 vp->v_flag &= ~VMODIFIED;
464 if (bhv_vop_reclaim(vp))
465 panic("%s: cannot reclaim 0x%p\n", __FUNCTION__, vp);
467 ASSERT(VNHEAD(vp) == NULL);
469 #ifdef XFS_VNODE_TRACE
470 ktrace_free(vp->v_trace);
475 * Enqueue a work item to be picked up by the vfs xfssyncd thread.
476 * Doing this has two advantages:
477 * - It saves on stack space, which is tight in certain situations
478 * - It can be used (with care) as a mechanism to avoid deadlocks.
479 * Flushing while allocating in a full filesystem requires both.
482 xfs_syncd_queue_work(
485 void (*syncer)(bhv_vfs_t *, void *))
487 struct bhv_vfs_sync_work *work;
489 work = kmem_alloc(sizeof(struct bhv_vfs_sync_work), KM_SLEEP);
490 INIT_LIST_HEAD(&work->w_list);
491 work->w_syncer = syncer;
494 spin_lock(&vfs->vfs_sync_lock);
495 list_add_tail(&work->w_list, &vfs->vfs_sync_list);
496 spin_unlock(&vfs->vfs_sync_lock);
497 wake_up_process(vfs->vfs_sync_task);
501 * Flush delayed allocate data, attempting to free up reserved space
502 * from existing allocations. At this point a new allocation attempt
503 * has failed with ENOSPC and we are in the process of scratching our
504 * heads, looking about for more room...
507 xfs_flush_inode_work(
511 filemap_flush(((struct inode *)inode)->i_mapping);
512 iput((struct inode *)inode);
519 struct inode *inode = vn_to_inode(XFS_ITOV(ip));
520 struct bhv_vfs *vfs = XFS_MTOVFS(ip->i_mount);
523 xfs_syncd_queue_work(vfs, inode, xfs_flush_inode_work);
524 delay(msecs_to_jiffies(500));
528 * This is the "bigger hammer" version of xfs_flush_inode_work...
529 * (IOW, "If at first you don't succeed, use a Bigger Hammer").
532 xfs_flush_device_work(
536 sync_blockdev(vfs->vfs_super->s_bdev);
537 iput((struct inode *)inode);
544 struct inode *inode = vn_to_inode(XFS_ITOV(ip));
545 struct bhv_vfs *vfs = XFS_MTOVFS(ip->i_mount);
548 xfs_syncd_queue_work(vfs, inode, xfs_flush_device_work);
549 delay(msecs_to_jiffies(500));
550 xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC);
560 if (!(vfsp->vfs_flag & VFS_RDONLY))
561 error = bhv_vfs_sync(vfsp, SYNC_FSDATA | SYNC_BDFLUSH | \
562 SYNC_ATTR | SYNC_REFCACHE, NULL);
563 vfsp->vfs_sync_seq++;
565 wake_up(&vfsp->vfs_wait_single_sync_task);
573 bhv_vfs_t *vfsp = (bhv_vfs_t *) arg;
574 bhv_vfs_sync_work_t *work, *n;
577 timeleft = xfs_syncd_centisecs * msecs_to_jiffies(10);
579 timeleft = schedule_timeout_interruptible(timeleft);
582 if (kthread_should_stop() && list_empty(&vfsp->vfs_sync_list))
585 spin_lock(&vfsp->vfs_sync_lock);
587 * We can get woken by laptop mode, to do a sync -
588 * that's the (only!) case where the list would be
589 * empty with time remaining.
591 if (!timeleft || list_empty(&vfsp->vfs_sync_list)) {
593 timeleft = xfs_syncd_centisecs *
594 msecs_to_jiffies(10);
595 INIT_LIST_HEAD(&vfsp->vfs_sync_work.w_list);
596 list_add_tail(&vfsp->vfs_sync_work.w_list,
597 &vfsp->vfs_sync_list);
599 list_for_each_entry_safe(work, n, &vfsp->vfs_sync_list, w_list)
600 list_move(&work->w_list, &tmp);
601 spin_unlock(&vfsp->vfs_sync_lock);
603 list_for_each_entry_safe(work, n, &tmp, w_list) {
604 (*work->w_syncer)(vfsp, work->w_data);
605 list_del(&work->w_list);
606 if (work == &vfsp->vfs_sync_work)
608 kmem_free(work, sizeof(struct bhv_vfs_sync_work));
619 vfsp->vfs_sync_work.w_syncer = vfs_sync_worker;
620 vfsp->vfs_sync_work.w_vfs = vfsp;
621 vfsp->vfs_sync_task = kthread_run(xfssyncd, vfsp, "xfssyncd");
622 if (IS_ERR(vfsp->vfs_sync_task))
623 return -PTR_ERR(vfsp->vfs_sync_task);
631 kthread_stop(vfsp->vfs_sync_task);
636 struct super_block *sb)
638 bhv_vfs_t *vfsp = vfs_from_sb(sb);
641 xfs_fs_stop_syncd(vfsp);
642 bhv_vfs_sync(vfsp, SYNC_ATTR | SYNC_DELWRI, NULL);
643 error = bhv_vfs_unmount(vfsp, 0, NULL);
645 printk("XFS: unmount got error=%d\n", error);
646 printk("%s: vfs=0x%p left dangling!\n", __FUNCTION__, vfsp);
648 vfs_deallocate(vfsp);
654 struct super_block *sb)
656 if (!(sb->s_flags & MS_RDONLY))
657 bhv_vfs_sync(vfs_from_sb(sb), SYNC_FSDATA, NULL);
663 struct super_block *sb,
666 bhv_vfs_t *vfsp = vfs_from_sb(sb);
670 if (unlikely(sb->s_frozen == SB_FREEZE_WRITE))
671 flags = SYNC_QUIESCE;
673 flags = SYNC_FSDATA | (wait ? SYNC_WAIT : 0);
675 error = bhv_vfs_sync(vfsp, flags, NULL);
678 if (unlikely(laptop_mode)) {
679 int prev_sync_seq = vfsp->vfs_sync_seq;
682 * The disk must be active because we're syncing.
683 * We schedule xfssyncd now (now that the disk is
684 * active) instead of later (when it might not be).
686 wake_up_process(vfsp->vfs_sync_task);
688 * We have to wait for the sync iteration to complete.
689 * If we don't, the disk activity caused by the sync
690 * will come after the sync is completed, and that
691 * triggers another sync from laptop mode.
693 wait_event(vfsp->vfs_wait_single_sync_task,
694 vfsp->vfs_sync_seq != prev_sync_seq);
702 struct dentry *dentry,
703 struct kstatfs *statp)
705 return -bhv_vfs_statvfs(vfs_from_sb(dentry->d_sb), statp,
706 vn_from_inode(dentry->d_inode));
711 struct super_block *sb,
715 bhv_vfs_t *vfsp = vfs_from_sb(sb);
716 struct xfs_mount_args *args = xfs_args_allocate(sb, 0);
719 error = bhv_vfs_parseargs(vfsp, options, args, 1);
720 if ((args->flags2 & XFSMNT2_TAGXID) &&
721 !(sb->s_flags & MS_TAGXID)) {
722 printk("XFS: %s: tagxid not permitted on remount.\n",
727 error = bhv_vfs_mntupdate(vfsp, flags, args);
728 kmem_free(args, sizeof(*args));
734 struct super_block *sb)
736 bhv_vfs_freeze(vfs_from_sb(sb));
742 struct vfsmount *mnt)
744 return -bhv_vfs_showargs(vfs_from_sb(mnt->mnt_sb), m);
749 struct super_block *sb,
752 return -bhv_vfs_quotactl(vfs_from_sb(sb), Q_XQUOTASYNC, 0, NULL);
757 struct super_block *sb,
758 struct fs_quota_stat *fqs)
760 return -bhv_vfs_quotactl(vfs_from_sb(sb), Q_XGETQSTAT, 0, (caddr_t)fqs);
765 struct super_block *sb,
769 return -bhv_vfs_quotactl(vfs_from_sb(sb), op, 0, (caddr_t)&flags);
774 struct super_block *sb,
777 struct fs_disk_quota *fdq)
779 return -bhv_vfs_quotactl(vfs_from_sb(sb),
780 (type == USRQUOTA) ? Q_XGETQUOTA :
781 ((type == GRPQUOTA) ? Q_XGETGQUOTA :
782 Q_XGETPQUOTA), id, (caddr_t)fdq);
787 struct super_block *sb,
790 struct fs_disk_quota *fdq)
792 return -bhv_vfs_quotactl(vfs_from_sb(sb),
793 (type == USRQUOTA) ? Q_XSETQLIM :
794 ((type == GRPQUOTA) ? Q_XSETGQLIM :
795 Q_XSETPQLIM), id, (caddr_t)fdq);
800 struct super_block *sb,
804 struct bhv_vnode *rootvp;
805 struct bhv_vfs *vfsp = vfs_allocate(sb);
806 struct xfs_mount_args *args = xfs_args_allocate(sb, silent);
807 struct kstatfs statvfs;
810 bhv_insert_all_vfsops(vfsp);
812 error = bhv_vfs_parseargs(vfsp, (char *)data, args, 0);
814 bhv_remove_all_vfsops(vfsp, 1);
818 sb_min_blocksize(sb, BBSIZE);
819 sb->s_export_op = &xfs_export_operations;
820 sb->s_qcop = &xfs_quotactl_operations;
821 sb->s_op = &xfs_super_operations;
823 error = bhv_vfs_mount(vfsp, args, NULL);
825 bhv_remove_all_vfsops(vfsp, 1);
829 error = bhv_vfs_statvfs(vfsp, &statvfs, NULL);
834 sb->s_magic = statvfs.f_type;
835 sb->s_blocksize = statvfs.f_bsize;
836 sb->s_blocksize_bits = ffs(statvfs.f_bsize) - 1;
837 sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);
839 set_posix_acl_flag(sb);
841 error = bhv_vfs_root(vfsp, &rootvp);
845 sb->s_root = d_alloc_root(vn_to_inode(rootvp));
850 if (is_bad_inode(sb->s_root->d_inode)) {
854 if ((error = xfs_fs_start_syncd(vfsp)))
856 vn_trace_exit(rootvp, __FUNCTION__, (inst_t *)__return_address);
858 kmem_free(args, sizeof(*args));
870 bhv_vfs_unmount(vfsp, 0, NULL);
873 vfs_deallocate(vfsp);
874 kmem_free(args, sizeof(*args));
880 struct file_system_type *fs_type,
882 const char *dev_name,
884 struct vfsmount *mnt)
886 return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super,
890 STATIC struct super_operations xfs_super_operations = {
891 .alloc_inode = xfs_fs_alloc_inode,
892 .destroy_inode = xfs_fs_destroy_inode,
893 .write_inode = xfs_fs_write_inode,
894 .clear_inode = xfs_fs_clear_inode,
895 .put_super = xfs_fs_put_super,
896 .write_super = xfs_fs_write_super,
897 .sync_fs = xfs_fs_sync_super,
898 .write_super_lockfs = xfs_fs_lockfs,
899 .statfs = xfs_fs_statfs,
900 .remount_fs = xfs_fs_remount,
901 .show_options = xfs_fs_show_options,
904 STATIC struct quotactl_ops xfs_quotactl_operations = {
905 .quota_sync = xfs_fs_quotasync,
906 .get_xstate = xfs_fs_getxstate,
907 .set_xstate = xfs_fs_setxstate,
908 .get_xquota = xfs_fs_getxquota,
909 .set_xquota = xfs_fs_setxquota,
912 STATIC struct file_system_type xfs_fs_type = {
913 .owner = THIS_MODULE,
915 .get_sb = xfs_fs_get_sb,
916 .kill_sb = kill_block_super,
917 .fs_flags = FS_REQUIRES_DEV,
926 static char message[] __initdata = KERN_INFO \
927 XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n";
932 xfs_physmem = si.totalram;
936 error = xfs_init_zones();
940 error = xfs_buf_init();
949 error = register_filesystem(&xfs_fs_type);
968 unregister_filesystem(&xfs_fs_type);
975 module_init(init_xfs_fs);
976 module_exit(exit_xfs_fs);
978 MODULE_AUTHOR("Silicon Graphics, Inc.");
979 MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
980 MODULE_LICENSE("GPL");